/Engine/Source/Editor/UnrealEd/Public/Layers/LayersSubsystem.h
Appends all the actors associated with the specified layer.
virtual void AppendActorsFromLayer ( const [FName](API\Runtime\Core\UObject\FName) & LayerName, [TArray](API\Runtime\Core\Containers\TArray)< [TWeakObjectPtr](API\Runtime\Core\UObject\TWeakObjectPtr)< [AActor](API\Runtime\Engine\GameFramework\AActor) > > & InOutActors, const [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [ActorFilter](API\Editor\UnrealEd\Layers\ULayersSubsystem\ActorFilter) > & Filter ) const